AAT3663_08 Datasheet, PDF (2/23 Pages) Advanced Analogic Technologies – 1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications

BatteryManager^TM
PRODUCT DATASHEET
AAT3663
1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications
Pin Description
Pin #
1
2
3
4
5
6
7
8, 9
10
11
12
13
14
Symbol
EN
CT
ISET
GND
TS
BATS
BAT
IN
STAT1
STAT2
ADPP#
TERM
N/C
Type
I
I
I
I/O
I/O
I
O
I
O
O
O
I
Function
Enable pin, Active high with internal pull-down. If not used, pull high to the IN pin to continuously
enable the charger IC when input power is applied.
Charge timer programming pin. A 0.1μF ceramic capacitor should be connected between this pin
and GND. Connect directly to GND to disable the timer function.
Charge current programming pin. Connect a resistor between this pin and GND to program the con-
stant fast charge current.
IC ground connection. Connect this pin to power ground.
Battery temperature sense input. Connect the Li-Ion battery pack NTC resistor terminal to this pin.
Battery voltage sense pin. Connect this pin directly to the positive battery terminal. If this function
is not used, connect to the BAT pin directly.
Battery charge output pin. Connect to the positive battery terminal.
Power supply input pin. Connect the input USB port or Adapter power source to this pin
Charge status pin, open-drain output. Connect the STAT1 LED with a series ballast resistor between
IN and this pin.
Charge status pin, open-drain output. Connect the STAT2 LED with a series ballast resistor between
IN and this pin.
Input supply power-good status pin, open-drain output. Connect the ADPP# status LED with a series
ballast resistor between IN and this pin.
Charge termination current programming input pin. Connect a resistor between this pin and GND
to program the charge termination current. When TERM is open, the termination current is 10%
(default sertting) of the set maximum charge current.
No connection.
Pin Configuration
TDFN33-14
(Top View)
EN ¹
CT ²
ISET ³
GND ⁴
TS ⁵
BATS ⁶
BAT ⁷
14 _N/C
13 _TERM
12 _ADPP#
11 _STAT2
10 _STAT1
9 _IN
8 _IN
2
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3663.2008.01.1.2